Mitsubishi Electric PKA-RP60KAL Service Manual
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Mitsubishi Electric PKA-RP60KAL Service Manual

Wall mounted pka series
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See also: Technical Data Book , Operating Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

Indoor unit
[Model names]
[Service Ref.]
PKA-RP60KAL.TH
PKA-RP60KAL
PKA-RP71KAL.TH
PKA-RP71KAL
PKA-RP100KAL.TH
PKA-RP100KAL
INDOOR UNIT
WIRELESS REMOTE
CONTROLLER
ON/OFF
TEMP
CONTENTS
1. REFERENCE MANUAL ................................... 2
2. SAFETY PRECAUTION ................................... 3
3. PART NAMES AND FUNCTIONS ................... 4
4. SPECIFICATIONS ............................................ 6
5. NOISE CRITERION CURVES .......................... 7
6. OUTLINES AND DIMENSIONS ....................... 8
7. WIRING DIAGRAM .......................................... 9
9. TROUBLESHOOTING .................................... 11
10. SPECIAL FUNCTION ..................................... 26
11. DISASSEMBLY PROCEDURE ....................... 29
PARTS CATALOG (OCB452)
February 2009
No. OCH452
NOTE:
• This manual describes
only service data of the
indoor units.
• RoHS compliant products
have <G> mark on the
spec name plate.

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Summary of Contents for Mitsubishi Electric PKA-RP60KAL

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS February 2009 No. OCH452 SERVICE MANUAL Indoor unit [Model names] [Service Ref.] PKA-RP60KAL.TH NOTE: PKA-RP60KAL • This manual describes PKA-RP71KAL.TH only service data of the PKA-RP71KAL indoor units. • RoHS compliant products PKA-RP100KAL.TH...

  • Page 2: Reference Manual

    REFERENCE MANUAL OUTDOOR UNIT’S SERVICE MANUAL Service Manual No. Service Ref. PUHZ-RP35/50/60/71VHA4 OCH451 PUHZ-RP100/125/140VKA OCB451 PUHZ-RP100/125/140/200/250YKA PU(H)-P71/100VHA#2.UK OC379 PU(H)-P71/100/125/140YHA#2.UK PUHZ-P100/125/140VHA3.UK OCH415/ OCB415 PUHZ-P200/250YHA3 OCH424/ OCB424 PUHZ-HRP100VHA2 OCH425/ OCB425 PUHZ-HRP100YHA2...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 2-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilising refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.

  • Page 4: Part Names And Functions

    Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Tool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over.

  • Page 5: Wireless Remote Controller

    Wireless remote controller CHECK TEST RUN display CHECK and TEST RUN display indicate that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display SET TEMP.

  • Page 6: Specifications

    SPECIFICATIONS Service Ref. PKA-RP60KAL.TH Mode Cooling Heating Power supply (phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.06 0.05 Running current 0.43 0.36 External finish (Panel) Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) Line flow fan (direct) Fan motor output 0.056...

  • Page 7: Noise Criterion Curves

    NOISE CRITERION CURVES 5-1. SOUND LEVELS Sound level at anechoic room : Low-Middle-High Sound level dB (A) PKA-RP60,71KAL,TH 39 - 42 - 45 PKA-RP100KAL,TH 41 - 45 - 49 1.0m Measurement location * Measured in anechoic room. 5-2. NOISE CRITERION CURVES PKA-RP60,71KAL PKA-RP100KAL External static pressure : 0Pa...

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PKA-RP60,71,100KAL.TH Unit : mm Top side 423.7 431.7 Right side Left side Front side Mount board Knockout hole for left piping (855) Operation lamp 1170 Knockout hole for DEFROST/STAND BY lamp right piping Receiver Front side (Grille open) Terminal block for outdoor unit Terminal block for power supply (option) Terminal block for...

  • Page 9: Wiring Diagram

    WIRING DIAGRAM PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH [LEGEND] SYMBOL NAME SYMBOL NAME Indoor controller board Vane motor CN2L Connector (LOSSNAY) Fan motor CN32 Connector (Remote switch) Switch board CN41 Connector (HA terminal-A) SWE2 Emergency operation CN51 Connector (Centrally control) Terminal block (Indoor unit Power (option))

  • Page 10: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH2 Refrigerant flow in cooling Pipe temperature(Liquid) Refrigerant flow in heating Thermistor TH5 (Cond./ Eva.temperature) Refrigerant LIQUID pipe connection (Flare) Thermistor TH1 (Room temperature)

  • Page 11: Troubleshooting

    TROUBLESHOOTING 9-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service and the trouble reoccurrence at field are summarized in the table below. Check the contents below before investigating details.
  • Page 12 9-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
  • Page 13 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp flash pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
  • Page 14 • On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp • On wired remote controller Check code displayed in the LCD. • If the unit cannot be operated properly after test run, refer to the following table to find the cause. Symptom Cause Wired remote controller...

  • Page 15: Self-Diagnosis Action Table

    Note: Refer to the manual of outdoor unit for the details of display 9-3. SELF-DIAGNOSIS ACTION TABLE such as F, U, and other E. Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Room temperature thermistor (TH1) 1 The unit is in 3-minute resume characteristics...
  • Page 16 Abnormal point and detection method Countermeasure Error Code Cause Freezing/overheating protection is work- (Cooling or drying mode) (Cooling or drying mode) 1 Clogged filter (reduced airflow) 1 Check clogs of the filter. 1 Freezing protection (Cooling mode) 2 Short cycle of air path 2 Remove shields.
  • Page 17 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor Pipe temperature thermistor / 1–3 Check resistance value of thermistor. Condenser-Evaporator (TH5) characteristics For characteristics, refer to (P1) above. 1 The unit is in 3-minute resume protec- 2 Contact failure of connector 2 Check contact failure of connector (CN44) tion mode if short/open of thermistor is (CN44) on the indoor controller...
  • Page 18 Abnormal point and detection method Countermeasure Error Code Cause 1 Contact failure, short circuit or, Indoor/outdoor unit communication * Check LED display on the outdoor control error (Signal receiving error) circuit board. (Connect A-control service miswiring (converse wiring) of 1 Abnormal if indoor controller board tool, PAC-SK52ST.) indoor/outdoor unit connecting cannot receive any signal normally for 6...

  • Page 19: Troubleshooting By Inferior Phenomena

    9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (1)LED2 on indoor controller board • When LED1 on indoor controller board is also off. is off. 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power door unit.
  • Page 20 Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (2)LED2 on indoor controller board • When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire is blinking. Connection failure of indoor/outdoor unit connecting for connection failure.

  • Page 21: Emergency Operation

    9-5. EMERGENCY OPERATION 9-5-1. When wireless remote controller troubles or its battery is exhausted When the remote controller cannot be used When the batteries of the remote controller run out or the remote controller malfunctions, the emergency operation can be done using the emergency buttons.
  • Page 22 9-6. HOW TO CHECK THE PARTS PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester. thermistor (TH1) (At the ambient temperature 10 ~30 ) Liquid pipe temperature Normal Abnormal thermistor (TH2) Refer to the thermistor.
  • Page 23 9-6-2. DC Fan motor (fan motor/indoor controller circuit board) Check method of DC fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit board and fan motor.) Self check...
  • Page 24 9-7. TEST POINT DIAGRAM PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH CNMF Connect to the fan motor (MF) 1-3 : DC310~340V 4-3 : DC15V 5-3 : DC0~6.5V 6-3 : DC0 or DC15V CN01 Connect to the Terminal block (TB4) 1-3 : 220-240VAC Emergency FUSE operation connector (3.15A 250V)
  • Page 25 1 2 3 4 5 settings PKA-RP·KAL MODELS SETTING Capacity 1 2 3 4 5 settings PKA-RP60KAL 1 2 3 4 5 PKA-RP71KAL 1 2 3 4 5 PKA-RP100KAL <Initial setting> Wireless remote controller: 0 Control PCB setting Wireless remote...

  • Page 26: Special Function

    SPECIAL FUNCTION 10-1. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) Optional wired remote controller with terminal bed (PAR-21MAAT-E) are necessary for PKA type. 10-1-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub unit operate alternately according to the interval of rotation setting. w Main and sub unit should be set by refrigerant address.(Outdoor Dip switch setting) Refrigerant address"00"...
  • Page 27 • System constraint · This function is available only in cooling mode. [2nd stage cut-in function]··· Request code number "322~324" Ex.) Set temp. by R/C = 20: Set point = 26: Room temp. Set point Room temp. < Set point -4 When request code number is “323”.
  • Page 28 (2) Setting method of each function by wired remote controller B: Refrigerant address C: Data display area D: Request code display area 1. Stop operation( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ( ). TEST After a while, [00] appears in the refrigerant address number display area.(at 3.

  • Page 29: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH Be careful when removing heavy parts. OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 1. REMOVING THE PANEL Photo 1 Front grille Screws (1) Press and unlock the knobs on both sides of the front grille and lift the front grille until it is level. Pull the hinges forward to remove the front grille.

  • Page 30: Operation Procedure

    OPERATION PROCEDURE PHOTOS 3. REMOVING THE ELECTRICAL BOX Connector for Photo 4 Terminal block (TB4) ground wire (1) Remove the panel and the corner box. (Refer to 1.) Fixture (2) Remove the front and side electrical box covers (each 1 screw).
  • Page 31 OPERATION PROCEDURE PHOTOS 6. REMOVING THE INDOOR FAN MOTOR AND THE Photo 7 LINE FLOW FAN Screw of the motor band (1) Remove the panel and the corner box. (Refer to 1.) Lead wire of pipe ther- mistor (2) Remove the electrical box (Refer to 2.) and the nozzle assembly (Refer to 3.).
  • Page 32 (I.B.) Room temp. thermistor (TH1) HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2009 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Feb. 2009 No.OCH452 PDF 6 Made in Japan New publication, effective Feb. 2009 Specifications subject to change without notice...

This manual is also suitable for:

Pka-rp100kalPka-rp71kalMr.slim pka-rp60kalMr.slim pka-rp71kalMr.slim pka-rp100kalMr. slim pka series ... Show all

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